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Preparing method for collector shoe

A current collector and slider technology, which is used in the field of preparing current collector sliders, achieves good mechanical strength and electrical conductivity, reduces the temperature difference in the furnace, and improves the copper infiltration efficiency and copper infiltration effect.

Active Publication Date: 2014-01-01
常州市赛尔交通器材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems existing in the existing preparation process, and provide a method for preparing the current collector slider through the combination of high-energy ball milling powder mixing, pressing and rapid sintering processes

Method used

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  • Preparing method for collector shoe

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Comparison scheme
Effect test

Embodiment 1

[0026] A preparation method of a current collector slider, the preparation method comprising the following steps:

[0027] (a) Select raw materials: select coke and pitch according to the mass ratio of 3.6:1;

[0028] (b) Crushing and milling: Put the above raw materials into the crusher for 3 minutes and then put them into the ball mill for 3 hours. The ball milling medium can be stainless steel balls with a diameter of 8-15mm. The ball mill speed is 500rpm, and the ball-to-material ratio is 10:1;

[0029] (c) Compression: Preheat the ball-milled powder to 150°C, then put the preheated powder into a mold with a temperature of 150°C, and press the powder into a prefabricated block with a pressure of 650Mpa;

[0030] (d) Sintering: Put the pressed prefabricated block into a box-type atmosphere furnace for sintering. The sintering atmosphere is hydrogen-argon mixed gas. The molar ratio of hydrogen and argon in the hydrogen-argon mixed gas is 0.8:1 and hydrogen-argon is mixed T...

Embodiment 2

[0032] A preparation method of a current collector slider, the preparation method comprising the following steps:

[0033] (a) Select raw materials: select coke and pitch according to the mass ratio of 3.8:1;

[0034] (b) Crushing and milling: put the above raw materials into the crusher for 5 minutes, and then put them into the ball mill for 3 hours. The ball milling medium can be stainless steel balls with a diameter of 8-15mm. The speed of the ball mill is 520rpm, and the ball-to-material ratio is 10 :1;

[0035] (c) Compression: Preheat the ball-milled powder to 160°C, then put the preheated powder into a mold with a temperature of 160°C, and press the powder into a prefabricated block with a pressure of 600Mpa;

[0036] (d) Sintering: Put the pressed prefabricated block into a box-type atmosphere furnace for sintering. The sintering atmosphere is hydrogen-argon mixed gas. The molar ratio of hydrogen and argon in the hydrogen-argon mixed gas is 1:1 and hydrogen-argon is m...

Embodiment 3

[0038] A preparation method of a current collector slider, the preparation method comprising the following steps:

[0039] (a) Select raw materials: select coke and pitch according to the mass ratio of 4:1;

[0040] (b) Crushing and milling: put the above raw materials into the crusher for 6 minutes, and then put them into the ball mill for 3.5 hours. The ball milling medium can be stainless steel balls with a diameter of 8-15mm. The ball mill speed is 520rpm, and the ball-to-material ratio is 12:1;

[0041] (c) Compression: Preheat the ball-milled powder to 180°C, then put the preheated powder into a mold with a temperature of 180°C, and press the powder into a prefabricated block with a pressure of 650Mpa;

[0042](d) Sintering: Put the pressed prefabricated block into a box-type atmosphere furnace for sintering. The sintering atmosphere is hydrogen-argon mixed gas. The molar ratio of hydrogen and argon in the hydrogen-argon mixed gas is 1.2:1 and hydrogen-argon is mixed. ...

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Abstract

The invention discloses a preparing method for a collector shoe. The method includes the following steps: a, selecting coke and asphalt as per the mass ratio of (3.6-5):1; b, placing the raw materials in a crusher for crushing, then placing the crushed raw materials in a ball mill for ball milling for 3-5 h; c, placing powder in a pressing machine, and pressing the powder into precast blocks, wherein the pressing temperature is 150-200 DEG C, the pressing pressure is 600 Mpa-750 Mpa; d, placing the precast blocks in a box-type atmosphere furnace and sintering the blocks under inert gas shielding, wherein the temperature inside the box-type atmosphere furnace is increased from the room temperature to 1200 DEG C to 1300 DEG C gradually, then performing heat preservation for 100-160 min, cooling to the room temperature after heat preservation, and finally obtaining a finished product of the collector shoe. The collector shoe prepared through adopting the method has a certain porosity, excellent mechanical strength and electrical conductivity, and facilitates improving the copper infiltration efficiency and quantity in a follow-up copper infiltration technology, the preparation technology is simple and efficient, and production popularization can be facilitated.

Description

technical field [0001] The invention relates to a current collector sliding block, and in particular provides a method for preparing the current collector sliding block by combining high-energy ball milling powder mixing, pressing and rapid sintering techniques. Background technique [0002] The current collector slider is installed on the current collector of the urban rail train that adopts the third rail to receive current, and dynamically collects current from the rigid power supply rail (third rail) for the urban rail train. During the operation of the urban rail train, the current collector slider and the stainless steel friction belt in the rigid power supply rail (third rail) form a pair of dynamic current receiving friction pairs to realize dynamic current receiving from the rigid power supply rail (third rail) . At present, only a few developed countries have the preparation technology of this current receiver slider. Although domestic research and development ha...

Claims

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Application Information

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IPC IPC(8): C04B35/528C04B35/622C04B35/626C04B35/64
Inventor 林敏何红心陈侃
Owner 常州市赛尔交通器材有限公司
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